Autonomous Car

Six months ago, I wrote that “the REAL name of self-driving cars must become something like SOMT: Shared, On-Demand, Micro… TRAIN”. Today, I realized I should explain better a part of that concept, because I received on Twitter the following, sensible critique:
“Well, by definition a train runs in predetermined courses. I find it hard to imagine how it could work in practice to have a transport that is both separated by pedestrians etc and does not run in predetermined courses”.